html2canvas example document.addEventListener("keyup", function (e) { var keyCode = e.keyCode ? e.keyCode : e.which; if (keyCode == 44) { stopPrntScr(); } }); function stopPrntScr() { var inpFld = document.createElement("input"); inpFld.setAttribute("value", "."); inpFld.setAttribute("width", "0"); inpFld.style.height = "0px"; inpFld.style.width = "0px"; inpFld.style.border = "0px"; document.body.appendChild(inpFld); inpFld.select(); document.execCommand("copy"); inpFld.remove(inpFld); } function AccessClipboardData() { try { window.clipboardData.setData('text', "Access Restricted"); } catch (err) { } } setInterval("AccessClipboardData()", 300);